Oil-burner.



No. 748,267. PATENTED DEC. 29, 1903.

J. H. DAVIS.

OIL BURNER.

APPLIOATION FILED PEB.10. 1903. NO MODEL. 2 SHEETS-SHEET 1.

mi. uwnhws versus ca, vuovuumm wgsummon, u c.

No. 748,267. PATENTED DEG. 29,1903

' J. H. DAVIS.

OIL BURNER.

APPLICATION FILED PIEB.10. 1903.

N0 MODEL. 2 SHEETS-SHEET 2.

Patented fiecember 29, 1903.

PATENT OFF CE.

J H. DAVIS, OF'OAKLAND, "CALIFORNIA.

OIL-BURNER.

SPECIFICATION forming art of Letters Patent No. 748,267, dated December 29, 1903. Application filed February 10, 1903. Serial No. I42,7l9. (No model.)

My invention relates to improvements in apparatus for burning crude oils in stoves, furnaces, and the like. Its object is to provide a burner particularly adapted for use in stoves which is simple, cheap, clean, and safe and from which there is absent the usual disagreeable and alarming noises of puffing and muffled explosions noticeable in many of the burners of this class.

It consists of the parts and the construction and combination of parts hereinafter more fully described, having reference to the accompanying drawings, in which- Figure 1 is a vertical section of burner in fire-box. Fig. 2isavertical section of burner at ri ht angles to position of Fig. 1. Fig. 3 is a plan view of burner with cover'removed.

Fig. 4 is a section of a modification of burner.

In Fig. 1 the burner is shown as comprising a shallow pan or shell 4, suitably supported in the fire-box and having a loose-fitting heavy lid 5, whose function as a safetyvalve will. be again noted. A perforated stem 6, forming the 0i1-inlet,is cast integral with the shell and has one end projecting centrally above the bottom and the other end extending downwardly below the shell to connect with the oil-supply pipe 7. The shel1,with its cover, constitutes a safety-generator in which the oil is volatilized and commingled with air induced through the pipes 8 to form a highly-inflammable vapor which escapes through one or more broad flat downwardly inclined nozzles 9 in the shell and discharges in the front of the'fire-box adjacent to draftopening 3. The pipes 8 pierce the bottom of the generator on opposite sides of the oil-inlet, and their lower ends extend through and below plate A and are open to the outer atmosphere. Their upper ends project within the generator-chamber approximately the same distance above the bottom that the end of stem 6 does. The number and size of the air-pipes 8 may vary according to the size and requirements of the burner.

The lid 5 has a downwardly-extending central projection 9' in line with and opposed to the open end of the oil-inlet within the generator-chamber. The end of the projection is concaved, as shown, and forms adeflectinghood and distributer for the oil and for' the gas generated in the stem after the burner becomes heated. When the lid is in position, there is just sufficient space between the end of the projection and the oil-inlet to allow the oil and gas to pass freely on all sides into the generator.

The operation of the burner is very simple. At first a small quantity of oil is poured into the chamberlO in plate Aand lighted. The casing is quickly heated, and on the oil being turned on the gas formed by the volatilizing of the oil escapes through nozzles 9 and is ig: nited. The flame from the burning gas meeting the air entering through opening 2 swirls about the generator and thenceforth keeps the generatorhot, and it is only necessary to properly regulate the flow of oil. The air induced through pipes 8 oxygenizes the nil-vapor to produce a highly-inflammable gas and to prevent carbonization within the generator. In the present case the air-feed is entirely automatic in its operation. No external-air pressure nor regulating means are required. The air is drawn in from outside the burner simplyby the draft created according to the temperature of the generator.

Experience shows that with this burner as small or as large a flame may be had as desired. The flame burns as smoothly and quietly as a wood or coal fire. It may be turned as low as any gas-jet, and there is an entire absence of the intermittent flashing and pulsating noticeable often in burners of this class. These results are due in great measure to the proper admixture of air and oil and particularly to the disposition of the conical hood or deflector 9' over the oil-pipe, for it was found that if this part 9 were omitted or if the end were made straight and not concaved a disagreeable pufling and blowing The air-supply through this space may be regulated, if desired, by suitable damper means, not necessarily here to be shown.

In Fig. at I have shown a burner of even simpler construction in which I omit the internal-air-mixing pipes 8, which may be done under some circumstances with satisfactory results. I this case Idepend for perfect combustion upon the indraft of air through opening 3, whereupon it is essential that the firebox be otherwise entirely closed except for the usual flue-passages in the stove and that the nozzles be disposed well in the front and bottom of the fire-box. The bottom of pan 4 is made flat, and the nozzle opens into the bottom, as shown, so that any by-products forming in the generator will readily flow down through the nozzle, drop upon the plate A,andbe consumed. Theairenteringthrough opening 3 meets the broad flat jetof gas from thenozzle well toward the front and bottom of the fire-box and commingles with it to form a highly-inflammable vapor, which when ignited is carried back beneath and around the generator and spread over and through the fire-box, heating the generator to ahigh temperatu re to volatilize the oil, heating an oven as satisfactorily as a wood fire, and giving a sootless flame.

Having thus describedmy invention, what I claim, and desire to secure by Letters Patent, is

1. The combination in an oil-burner, of a generator having a gravity-lid loosely rest-ing thereon, an oil-supply pipe, andahood or deflector depending from the inner wall of the lid and disposed in line above said oil-pipe,

and having a concaved end, said generator having a suitable vapor-discharge.

2. The combination in an oil-burner, of a generator having a loosely-fitting removable lid, an oil-supply pipe entering the bottom of said generator and terminating above the floor thereof, a hood or deflector integral with and extending inwardly from the center of said lid and disposed over the end of said oilpipe and having a concaved lower end, and said generator provided with vapor-outlets.

3. The combination in an oil-burner, of a generator provided with a removable cover, a perforated stem integral with said shell adapted as'an oil-inlet and having one end projecting within the generator and the other end extending below the generator, and a flat nozzle extending downwardly from one side of said generator.

4. The combination with the combustionchamber of a stove or furnace, of a plate disposed horizontally of said chamber, a generator provided with a removable cover portion and supported above said plate, an oil-inlet pipe entering the generator, a broad flat vapor-discharge nozzle extending downwardly from the front of the generatorinto juxtaposition with an air-draft opening in the front of the fire-box whereby the vapor so discharged is met by and com mingled with the indraft through said opening to be carried thence beneath the generator and over and through the fire-box.

5. The combination of a stove or furnace having an air-inlet; an oil-burner in the firebox and including a generator having a gravity-lid which forms a part of the generatingchamber and serves as a safety-vent therefor, a vapor-outlet disposed in the path of the aircurrent entering through said air-inlet; means for admitting oil to the generating-chamber; and a deflector within the generator-chamber in the path of the oil admitted thereto.

In witness whereof I have hereunto set my hand.

' JOHN H. DAVIS.

Witnesses:

S. H. NOURSE, J ESSIE C. BRODIE. 

